The document discusses key features and functions of the Firefox web browser: 1. Firefox aims to be a high-speed browser with support for new web technologies like HTML5 and strong customization capabilities. 2. It offers a simpler and more intuitive user interface that allows unified login/logout and new extension/theme management. 3. Examples of extensions discussed include addons for downloading videos and integrating Firebug and tabs.

4. Example1 By adding on of IE in firefox+firebug+TabMix

5. Example2 A Web site of adding on Video DownloadHelper for Firefox

8. A function2 It is unofficial adding on for music sharing site 8tracks. I mix it with a player displayed in the status bar(A playlist) I can hear ¤ò, and, reproduction of the music, a stop, a skip, repeat, operation such as the volume adjustment are possible at one time.

9. other software program1 Google Google does not have the intention to release the OS and other software by oneself. But I intend to develop the technology such as more low-level Ajax. I use the application of the open source steadily and intend to make Google Toolbar, Google Talk and Google Desktop an open source in the future.

10. other software program2 Internet Explorer IE came to be bundled gratis by Windows, and it came to be considered to be a virtual standard from the side that gradually made Web contents. In addition, the boot-time of the browser is fast because the indication time for rendering engine is fast when I compare it with Netscape Navigator, and the relations with the OS are close